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Overheating EV Power Modules? High-Insulation Si₃N₄ Substrates Improve System Reliability

2025-02-04
Latest company news about Overheating EV Power Modules? High-Insulation Si₃N₄ Substrates Improve System Reliability

Electric vehicle power modules often operate under extreme conditions — high current, high frequency, and continuous thermal cycling. These stresses cause delamination, solder fatigue, and eventual device failure.
The High-Insulation Silicon Nitride Substrate is engineered to address these problems by combining high thermal conductivity (≥90 W/m·K), superior dielectric strength (≥20 kV/mm), and exceptional mechanical robustness (≥600 MPa) in a single platform.

With a CTE of 3×10⁻⁶/K, the substrate matches the silicon or SiC chips perfectly, reducing thermal fatigue and enhancing long-term reliability. The AMB or DBC copper metallization provides excellent adhesion and low thermal resistance for efficient heat dissipation.
Field data shows that Si₃N₄-based modules can operate over 2000 hours at 125°C without degradation, and maintain stability across more than 100,000 thermal cycles.

Today, Si₃N₄ substrates are widely used in EV traction inverters, on-board chargers, DC-DC converters, and energy storage systems, providing safer operation, higher power density, and longer service life compared to traditional ceramics.
For manufacturers seeking next-generation reliability, this technology ensures outstanding electrical insulation and thermal management performance under harsh automotive environments.